Parts for Summicron-M 90

[manojd]

Is it possible to find parts for Summicron-M 90? I am looking for mechanical parts, not optics. OR would someone have a really beaten up lens that is not useful anymore, but still mechanically intact, that you would be willing to sell for a reasonable price.

I think I have a worn out focus cam on mine and I am looking for a replacement.

Thank you.